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Silicore
SHAOXING SILICORE TECHNOLOGY CO.,LTD
www. Silicore. com. cn
CHMC
1/3
2.3W DUAL AUDION POWER AMP
CD2025B
DESCRIPTION
Outli ne Drawing
The
CD2025B
is
a
monolithic
inte gra t ed
circui t
consist i ng of a 2-cha n nel p o wer amplifier. It is suit abl e
for
stereo
and
brid ge
amplifier
app lica t ion
of
rad i o
cassette tape recorder.
FEATURES
High o u tp u t power
St ereo: Po= 2 .3W (Typ) at Vcc= 9V, R L =4
Ω
Bridge: Po=4.7W (Typ) at Vcc=9V, R L =8
Ω
Low switch i ng dist orti on a t hi gh fr equen c y.
Small shock no ise at t h e time of power on /o ff due t o a buil t -in mu ting circu i t
Good rip p l e reject ion due to a bu ilt-in ri ppl e filter.
Good c h an n e l separa tio n.
Soft tone at the time of out put satu ration.
Clo s ed loop v o ltage gain fixed 45 d B (Bri dge: 51dB) but availa bil ity with ext e rnal
resistor added.
Minimu m nu mb er of external part s required.
Easy to des i gn ra diat or fin.
BLOCK DIAGRAM AND PIN CONNECTION
-
+
INPUT
AMP 1
SHOCK NOISE
REJECTOR
-
+
INPUT
AMP 2
OUT
AMP 1
OUT
AMP 2
RIPPLE FILTER
1
12
2
3
4
5
6
7
8
9
10
11
Fin
Fin
PRE GND
IN1
NF1 POWER GND
BS1
OUT1
Vcc
BTL OUT
OUT2
BS2
POWER GND
NF2
IN2
R.R
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